text: import unittest
  from translator import french_to_english
  from translator import english_to_french
  class TestMyModule1(unittest.TestCase):
      def test_f2e1(self):
          self.assertEqual(french_to_english('Au revoir'), 'Goodbye')
      def test_f2e2(self):
          self.assertEqual(french_to_english('Bonjour'), 'Hello')
      def test_f2e3(self):
          self.assertNotEqual(french_to_english('Oui'), 'No')
      def test_f2e4(self):
          self.assertNotEqual(french_to_english(0), 0)
  
  class TestMyModule2(unittest.TestCase):
      def test_e2f1(self):
          self.assertEqual(english_to_french('Hello'), 'Bonjour')
      def test_e2f2(self):
          self.assertEqual(english_to_french('Goodbye'), 'Au revoir')
      def test_e2f3(self):
          self.assertNotEqual(english_to_french('Hello'),'Au revoir')
      def test_e2f4(self):
          self.assertNotEqual(english_to_french(0), 0)
  
  unittest.main()